Home / 52,355.40-72,240.66-31,139.88

Finding the Fourth Proportional to 52,355.40, 72,240.66 and 31,139.88

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Solution

The fourth proportional to 52,355.40, 72,240.66 and 31,139.88 is: 42,967.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,355.40 : 72,240.66 = 31,139.88 : x
  2. Step 2: Convert to fraction form
    52,355.40/72,240.66 = 31,139.88/x
  3. Step 3: Cross multiply
    52,355.40x = 72,240.66 × 31,139.88
  4. Step 4: Simplify right side
    52,355.40x = 2,249,565,483.52
  5. Step 5: Solve for x
    x = 2,249,565,483.52/52,355.40
  6. Step 6: Final answer
    x = 42,967.21

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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.