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Finding the Fourth Proportional to 86,797.54, 130,152.48 and 42,357.70

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Solution

The fourth proportional to 86,797.54, 130,152.48 and 42,357.70 is: 63,515.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,797.54 : 130,152.48 = 42,357.70 : x
  2. Step 2: Convert to fraction form
    86,797.54/130,152.48 = 42,357.70/x
  3. Step 3: Cross multiply
    86,797.54x = 130,152.48 × 42,357.70
  4. Step 4: Simplify right side
    86,797.54x = 5,512,959,702.10
  5. Step 5: Solve for x
    x = 5,512,959,702.10/86,797.54
  6. Step 6: Final answer
    x = 63,515.16

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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.