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Finding the Fourth Proportional to 72,260.01, 99,718.95 and 40,428.95

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Solution

The fourth proportional to 72,260.01, 99,718.95 and 40,428.95 is: 55,792.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,260.01 : 99,718.95 = 40,428.95 : x
  2. Step 2: Convert to fraction form
    72,260.01/99,718.95 = 40,428.95/x
  3. Step 3: Cross multiply
    72,260.01x = 99,718.95 × 40,428.95
  4. Step 4: Simplify right side
    72,260.01x = 4,031,531,945.01
  5. Step 5: Solve for x
    x = 4,031,531,945.01/72,260.01
  6. Step 6: Final answer
    x = 55,792.02

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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.