Home / 66,079.05-99,130.95-21,718.59

Finding the Fourth Proportional to 66,079.05, 99,130.95 and 21,718.59

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Solution

The fourth proportional to 66,079.05, 99,130.95 and 21,718.59 is: 32,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,079.05 : 99,130.95 = 21,718.59 : x
  2. Step 2: Convert to fraction form
    66,079.05/99,130.95 = 21,718.59/x
  3. Step 3: Cross multiply
    66,079.05x = 99,130.95 × 21,718.59
  4. Step 4: Simplify right side
    66,079.05x = 2,152,984,459.36
  5. Step 5: Solve for x
    x = 2,152,984,459.36/66,079.05
  6. Step 6: Final answer
    x = 32,581.95

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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.