Home / 72,359.28-99,854.64-40,528.08

Finding the Fourth Proportional to 72,359.28, 99,854.64 and 40,528.08

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Solution

The fourth proportional to 72,359.28, 99,854.64 and 40,528.08 is: 55,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,359.28 : 99,854.64 = 40,528.08 : x
  2. Step 2: Convert to fraction form
    72,359.28/99,854.64 = 40,528.08/x
  3. Step 3: Cross multiply
    72,359.28x = 99,854.64 × 40,528.08
  4. Step 4: Simplify right side
    72,359.28x = 4,046,916,838.29
  5. Step 5: Solve for x
    x = 4,046,916,838.29/72,359.28
  6. Step 6: Final answer
    x = 55,928.10

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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.