Home / 66,091.08-91,017.90-58,130.76

Finding the Fourth Proportional to 66,091.08, 91,017.90 and 58,130.76

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Solution

The fourth proportional to 66,091.08, 91,017.90 and 58,130.76 is: 80,055.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,091.08 : 91,017.90 = 58,130.76 : x
  2. Step 2: Convert to fraction form
    66,091.08/91,017.90 = 58,130.76/x
  3. Step 3: Cross multiply
    66,091.08x = 91,017.90 × 58,130.76
  4. Step 4: Simplify right side
    66,091.08x = 5,290,939,700.60
  5. Step 5: Solve for x
    x = 5,290,939,700.60/66,091.08
  6. Step 6: Final answer
    x = 80,055.28

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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.