Home / 91,065.40-136,598.08-28,740.76

Finding the Fourth Proportional to 91,065.40, 136,598.08 and 28,740.76

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Solution

The fourth proportional to 91,065.40, 136,598.08 and 28,740.76 is: 43,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,065.40 : 136,598.08 = 28,740.76 : x
  2. Step 2: Convert to fraction form
    91,065.40/136,598.08 = 28,740.76/x
  3. Step 3: Cross multiply
    91,065.40x = 136,598.08 × 28,740.76
  4. Step 4: Simplify right side
    91,065.40x = 3,925,932,633.74
  5. Step 5: Solve for x
    x = 3,925,932,633.74/91,065.40
  6. Step 6: Final answer
    x = 43,111.13

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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.