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Finding the Fourth Proportional to 42,510.66, 63,753.03 and 20,312.34

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Solution

The fourth proportional to 42,510.66, 63,753.03 and 20,312.34 is: 30,462.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,510.66 : 63,753.03 = 20,312.34 : x
  2. Step 2: Convert to fraction form
    42,510.66/63,753.03 = 20,312.34/x
  3. Step 3: Cross multiply
    42,510.66x = 63,753.03 × 20,312.34
  4. Step 4: Simplify right side
    42,510.66x = 1,294,973,221.39
  5. Step 5: Solve for x
    x = 1,294,973,221.39/42,510.66
  6. Step 6: Final answer
    x = 30,462.32

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1.5x scale

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.