Home / 66,300.12-91,528.02-51,158.76

Finding the Fourth Proportional to 66,300.12, 91,528.02 and 51,158.76

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Solution

The fourth proportional to 66,300.12, 91,528.02 and 51,158.76 is: 70,625.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,300.12 : 91,528.02 = 51,158.76 : x
  2. Step 2: Convert to fraction form
    66,300.12/91,528.02 = 51,158.76/x
  3. Step 3: Cross multiply
    66,300.12x = 91,528.02 × 51,158.76
  4. Step 4: Simplify right side
    66,300.12x = 4,682,460,008.46
  5. Step 5: Solve for x
    x = 4,682,460,008.46/66,300.12
  6. Step 6: Final answer
    x = 70,625.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.