Home / 85,319.55-117,740.20-47,079.45

Finding the Fourth Proportional to 85,319.55, 117,740.20 and 47,079.45

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Solution

The fourth proportional to 85,319.55, 117,740.20 and 47,079.45 is: 64,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,319.55 : 117,740.20 = 47,079.45 : x
  2. Step 2: Convert to fraction form
    85,319.55/117,740.20 = 47,079.45/x
  3. Step 3: Cross multiply
    85,319.55x = 117,740.20 × 47,079.45
  4. Step 4: Simplify right side
    85,319.55x = 5,543,143,829.47
  5. Step 5: Solve for x
    x = 5,543,143,829.47/85,319.55
  6. Step 6: Final answer
    x = 64,969.21

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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.