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Finding the Fourth Proportional to 77,393.04, 106,803.53 and 45,126.78

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Solution

The fourth proportional to 77,393.04, 106,803.53 and 45,126.78 is: 62,275.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,393.04 : 106,803.53 = 45,126.78 : x
  2. Step 2: Convert to fraction form
    77,393.04/106,803.53 = 45,126.78/x
  3. Step 3: Cross multiply
    77,393.04x = 106,803.53 × 45,126.78
  4. Step 4: Simplify right side
    77,393.04x = 4,819,699,175.90
  5. Step 5: Solve for x
    x = 4,819,699,175.90/77,393.04
  6. Step 6: Final answer
    x = 62,275.62

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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.