Home / 78,838.20-118,220.85-34,442.10

Finding the Fourth Proportional to 78,838.20, 118,220.85 and 34,442.10

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Solution

The fourth proportional to 78,838.20, 118,220.85 and 34,442.10 is: 51,647.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,838.20 : 118,220.85 = 34,442.10 : x
  2. Step 2: Convert to fraction form
    78,838.20/118,220.85 = 34,442.10/x
  3. Step 3: Cross multiply
    78,838.20x = 118,220.85 × 34,442.10
  4. Step 4: Simplify right side
    78,838.20x = 4,071,774,337.79
  5. Step 5: Solve for x
    x = 4,071,774,337.79/78,838.20
  6. Step 6: Final answer
    x = 51,647.23

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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.