Home / 52,180.28-78,130.18-42,931.90

Finding the Fourth Proportional to 52,180.28, 78,130.18 and 42,931.90

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Solution

The fourth proportional to 52,180.28, 78,130.18 and 42,931.90 is: 64,282.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,180.28 : 78,130.18 = 42,931.90 : x
  2. Step 2: Convert to fraction form
    52,180.28/78,130.18 = 42,931.90/x
  3. Step 3: Cross multiply
    52,180.28x = 78,130.18 × 42,931.90
  4. Step 4: Simplify right side
    52,180.28x = 3,354,276,772.09
  5. Step 5: Solve for x
    x = 3,354,276,772.09/52,180.28
  6. Step 6: Final answer
    x = 64,282.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.