Home / 78,899.04-108,881.28-43,088.40

Finding the Fourth Proportional to 78,899.04, 108,881.28 and 43,088.40

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Solution

The fourth proportional to 78,899.04, 108,881.28 and 43,088.40 is: 59,462.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,899.04 : 108,881.28 = 43,088.40 : x
  2. Step 2: Convert to fraction form
    78,899.04/108,881.28 = 43,088.40/x
  3. Step 3: Cross multiply
    78,899.04x = 108,881.28 × 43,088.40
  4. Step 4: Simplify right side
    78,899.04x = 4,691,520,145.15
  5. Step 5: Solve for x
    x = 4,691,520,145.15/78,899.04
  6. Step 6: Final answer
    x = 59,462.32

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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.