Home / 72,417,997.07-99,937,355.67-39,378,009.38

Finding the Fourth Proportional to 72,417,997.07, 99,937,355.67 and 39,378,009.38

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Solution

The fourth proportional to 72,417,997.07, 99,937,355.67 and 39,378,009.38 is: 54,341,935.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,417,997.07 : 99,937,355.67 = 39,378,009.38 : x
  2. Step 2: Convert to fraction form
    72,417,997.07/99,937,355.67 = 39,378,009.38/x
  3. Step 3: Cross multiply
    72,417,997.07x = 99,937,355.67 × 39,378,009.38
  4. Step 4: Simplify right side
    72,417,997.07x = 3,935,334,128,985,656.50
  5. Step 5: Solve for x
    x = 3,935,334,128,985,656.50/72,417,997.07
  6. Step 6: Final answer
    x = 54,341,935.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.