Home / 72,032.57-99,400.90-40,203.52

Finding the Fourth Proportional to 72,032.57, 99,400.90 and 40,203.52

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Solution

The fourth proportional to 72,032.57, 99,400.90 and 40,203.52 is: 55,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,032.57 : 99,400.90 = 40,203.52 : x
  2. Step 2: Convert to fraction form
    72,032.57/99,400.90 = 40,203.52/x
  3. Step 3: Cross multiply
    72,032.57x = 99,400.90 × 40,203.52
  4. Step 4: Simplify right side
    72,032.57x = 3,996,266,071.17
  5. Step 5: Solve for x
    x = 3,996,266,071.17/72,032.57
  6. Step 6: Final answer
    x = 55,478.60

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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.