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Finding the Fourth Proportional to 91,611.84, 126,352.26 and 61,387.32

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Solution

The fourth proportional to 91,611.84, 126,352.26 and 61,387.32 is: 84,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,611.84 : 126,352.26 = 61,387.32 : x
  2. Step 2: Convert to fraction form
    91,611.84/126,352.26 = 61,387.32/x
  3. Step 3: Cross multiply
    91,611.84x = 126,352.26 × 61,387.32
  4. Step 4: Simplify right side
    91,611.84x = 7,756,426,617.34
  5. Step 5: Solve for x
    x = 7,756,426,617.34/91,611.84
  6. Step 6: Final answer
    x = 84,666.20

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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.