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Finding the Fourth Proportional to 77,469.40, 106,909.23 and 45,655.84

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Solution

The fourth proportional to 77,469.40, 106,909.23 and 45,655.84 is: 63,005.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,469.40 : 106,909.23 = 45,655.84 : x
  2. Step 2: Convert to fraction form
    77,469.40/106,909.23 = 45,655.84/x
  3. Step 3: Cross multiply
    77,469.40x = 106,909.23 × 45,655.84
  4. Step 4: Simplify right side
    77,469.40x = 4,881,030,699.40
  5. Step 5: Solve for x
    x = 4,881,030,699.40/77,469.40
  6. Step 6: Final answer
    x = 63,005.92

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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.