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Finding the Fourth Proportional to 86,909.80, 130,368.40 and 30,750.36

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Solution

The fourth proportional to 86,909.80, 130,368.40 and 30,750.36 is: 46,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,909.80 : 130,368.40 = 30,750.36 : x
  2. Step 2: Convert to fraction form
    86,909.80/130,368.40 = 30,750.36/x
  3. Step 3: Cross multiply
    86,909.80x = 130,368.40 × 30,750.36
  4. Step 4: Simplify right side
    86,909.80x = 4,008,875,232.62
  5. Step 5: Solve for x
    x = 4,008,875,232.62/86,909.80
  6. Step 6: Final answer
    x = 46,126.85

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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.