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Finding the Fourth Proportional to 91,293.30, 136,852.47 and 38,630.34

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Solution

The fourth proportional to 91,293.30, 136,852.47 and 38,630.34 is: 57,908.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,293.30 : 136,852.47 = 38,630.34 : x
  2. Step 2: Convert to fraction form
    91,293.30/136,852.47 = 38,630.34/x
  3. Step 3: Cross multiply
    91,293.30x = 136,852.47 × 38,630.34
  4. Step 4: Simplify right side
    91,293.30x = 5,286,657,445.94
  5. Step 5: Solve for x
    x = 5,286,657,445.94/91,293.30
  6. Step 6: Final answer
    x = 57,908.49

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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.