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Finding the Fourth Proportional to 91,080.48, 136,594.08 and 31,905.12

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Solution

The fourth proportional to 91,080.48, 136,594.08 and 31,905.12 is: 47,848.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,080.48 : 136,594.08 = 31,905.12 : x
  2. Step 2: Convert to fraction form
    91,080.48/136,594.08 = 31,905.12/x
  3. Step 3: Cross multiply
    91,080.48x = 136,594.08 × 31,905.12
  4. Step 4: Simplify right side
    91,080.48x = 4,358,050,513.69
  5. Step 5: Solve for x
    x = 4,358,050,513.69/91,080.48
  6. Step 6: Final answer
    x = 47,848.35

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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.