Home / 72,931.99-100,664.87-47,501.72

Finding the Fourth Proportional to 72,931.99, 100,664.87 and 47,501.72

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Solution

The fourth proportional to 72,931.99, 100,664.87 and 47,501.72 is: 65,564.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,931.99 : 100,664.87 = 47,501.72 : x
  2. Step 2: Convert to fraction form
    72,931.99/100,664.87 = 47,501.72/x
  3. Step 3: Cross multiply
    72,931.99x = 100,664.87 × 47,501.72
  4. Step 4: Simplify right side
    72,931.99x = 4,781,754,231.07
  5. Step 5: Solve for x
    x = 4,781,754,231.07/72,931.99
  6. Step 6: Final answer
    x = 65,564.57

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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.