Home / 77,434.60-115,979.10-59,847.40

Finding the Fourth Proportional to 77,434.60, 115,979.10 and 59,847.40

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Solution

The fourth proportional to 77,434.60, 115,979.10 and 59,847.40 is: 89,637.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,434.60 : 115,979.10 = 59,847.40 : x
  2. Step 2: Convert to fraction form
    77,434.60/115,979.10 = 59,847.40/x
  3. Step 3: Cross multiply
    77,434.60x = 115,979.10 × 59,847.40
  4. Step 4: Simplify right side
    77,434.60x = 6,941,047,589.34
  5. Step 5: Solve for x
    x = 6,941,047,589.34/77,434.60
  6. Step 6: Final answer
    x = 89,637.55

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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.