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Finding the Fourth Proportional to 91,896.80, 126,802.70 and 57,437.47

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Solution

The fourth proportional to 91,896.80, 126,802.70 and 57,437.47 is: 79,254.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,896.80 : 126,802.70 = 57,437.47 : x
  2. Step 2: Convert to fraction form
    91,896.80/126,802.70 = 57,437.47/x
  3. Step 3: Cross multiply
    91,896.80x = 126,802.70 × 57,437.47
  4. Step 4: Simplify right side
    91,896.80x = 7,283,226,363.88
  5. Step 5: Solve for x
    x = 7,283,226,363.88/91,896.80
  6. Step 6: Final answer
    x = 79,254.41

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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.