Home / 42,972-64,461.65-11,807.25

Finding the Fourth Proportional to 42,972, 64,461.65 and 11,807.25

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Solution

The fourth proportional to 42,972, 64,461.65 and 11,807.25 is: 17,711.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,972 : 64,461.65 = 11,807.25 : x
  2. Step 2: Convert to fraction form
    42,972/64,461.65 = 11,807.25/x
  3. Step 3: Cross multiply
    42,972x = 64,461.65 × 11,807.25
  4. Step 4: Simplify right side
    42,972x = 761,114,757.93
  5. Step 5: Solve for x
    x = 761,114,757.93/42,972
  6. Step 6: Final answer
    x = 17,711.88

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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.