Home / 78,647.28-118,045.04-52,370.40

Finding the Fourth Proportional to 78,647.28, 118,045.04 and 52,370.40

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Solution

The fourth proportional to 78,647.28, 118,045.04 and 52,370.40 is: 78,604.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,647.28 : 118,045.04 = 52,370.40 : x
  2. Step 2: Convert to fraction form
    78,647.28/118,045.04 = 52,370.40/x
  3. Step 3: Cross multiply
    78,647.28x = 118,045.04 × 52,370.40
  4. Step 4: Simplify right side
    78,647.28x = 6,182,065,962.82
  5. Step 5: Solve for x
    x = 6,182,065,962.82/78,647.28
  6. Step 6: Final answer
    x = 78,604.96

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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.