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Finding the Fourth Proportional to 77,315.52, 106,693.60 and 45,486.46

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Solution

The fourth proportional to 77,315.52, 106,693.60 and 45,486.46 is: 62,770.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,315.52 : 106,693.60 = 45,486.46 : x
  2. Step 2: Convert to fraction form
    77,315.52/106,693.60 = 45,486.46/x
  3. Step 3: Cross multiply
    77,315.52x = 106,693.60 × 45,486.46
  4. Step 4: Simplify right side
    77,315.52x = 4,853,114,168.66
  5. Step 5: Solve for x
    x = 4,853,114,168.66/77,315.52
  6. Step 6: Final answer
    x = 62,770.25

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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.