Home / 72,031.36-99,499.20-57,937.28

Finding the Fourth Proportional to 72,031.36, 99,499.20 and 57,937.28

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Solution

The fourth proportional to 72,031.36, 99,499.20 and 57,937.28 is: 80,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,031.36 : 99,499.20 = 57,937.28 : x
  2. Step 2: Convert to fraction form
    72,031.36/99,499.20 = 57,937.28/x
  3. Step 3: Cross multiply
    72,031.36x = 99,499.20 × 57,937.28
  4. Step 4: Simplify right side
    72,031.36x = 5,764,713,010.18
  5. Step 5: Solve for x
    x = 5,764,713,010.18/72,031.36
  6. Step 6: Final answer
    x = 80,030.60

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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.