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Finding the Fourth Proportional to 91,830.80, 137,746.20 and 29,507.60

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Solution

The fourth proportional to 91,830.80, 137,746.20 and 29,507.60 is: 44,261.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,830.80 : 137,746.20 = 29,507.60 : x
  2. Step 2: Convert to fraction form
    91,830.80/137,746.20 = 29,507.60/x
  3. Step 3: Cross multiply
    91,830.80x = 137,746.20 × 29,507.60
  4. Step 4: Simplify right side
    91,830.80x = 4,064,559,771.12
  5. Step 5: Solve for x
    x = 4,064,559,771.12/91,830.80
  6. Step 6: Final answer
    x = 44,261.40

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Similar ratio
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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.