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Finding the Fourth Proportional to 86,265.42, 129,398.13 and 49,303.50

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Solution

The fourth proportional to 86,265.42, 129,398.13 and 49,303.50 is: 73,955.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,265.42 : 129,398.13 = 49,303.50 : x
  2. Step 2: Convert to fraction form
    86,265.42/129,398.13 = 49,303.50/x
  3. Step 3: Cross multiply
    86,265.42x = 129,398.13 × 49,303.50
  4. Step 4: Simplify right side
    86,265.42x = 6,379,780,702.46
  5. Step 5: Solve for x
    x = 6,379,780,702.46/86,265.42
  6. Step 6: Final answer
    x = 73,955.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.