Home / 85,307.64-117,724.70-47,584.32

Finding the Fourth Proportional to 85,307.64, 117,724.70 and 47,584.32

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Solution

The fourth proportional to 85,307.64, 117,724.70 and 47,584.32 is: 65,666.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,307.64 : 117,724.70 = 47,584.32 : x
  2. Step 2: Convert to fraction form
    85,307.64/117,724.70 = 47,584.32/x
  3. Step 3: Cross multiply
    85,307.64x = 117,724.70 × 47,584.32
  4. Step 4: Simplify right side
    85,307.64x = 5,601,849,796.70
  5. Step 5: Solve for x
    x = 5,601,849,796.70/85,307.64
  6. Step 6: Final answer
    x = 65,666.45

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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.