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Finding the Fourth Proportional to 72,483,785.01, 100,027,637.91 and 39,888,737.01

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Solution

The fourth proportional to 72,483,785.01, 100,027,637.91 and 39,888,737.01 is: 55,046,465.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483,785.01 : 100,027,637.91 = 39,888,737.01 : x
  2. Step 2: Convert to fraction form
    72,483,785.01/100,027,637.91 = 39,888,737.01/x
  3. Step 3: Cross multiply
    72,483,785.01x = 100,027,637.91 × 39,888,737.01
  4. Step 4: Simplify right side
    72,483,785.01x = 3,989,976,142,323,495.50
  5. Step 5: Solve for x
    x = 3,989,976,142,323,495.50/72,483,785.01
  6. Step 6: Final answer
    x = 55,046,465.11

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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.