Home / 85,720.25-118,277.15-53,870.75

Finding the Fourth Proportional to 85,720.25, 118,277.15 and 53,870.75

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Solution

The fourth proportional to 85,720.25, 118,277.15 and 53,870.75 is: 74,331.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,720.25 : 118,277.15 = 53,870.75 : x
  2. Step 2: Convert to fraction form
    85,720.25/118,277.15 = 53,870.75/x
  3. Step 3: Cross multiply
    85,720.25x = 118,277.15 × 53,870.75
  4. Step 4: Simplify right side
    85,720.25x = 6,371,678,361.16
  5. Step 5: Solve for x
    x = 6,371,678,361.16/85,720.25
  6. Step 6: Final answer
    x = 74,331.07

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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.