Home / 85,538.16-118,045.08-47,811.60

Finding the Fourth Proportional to 85,538.16, 118,045.08 and 47,811.60

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Solution

The fourth proportional to 85,538.16, 118,045.08 and 47,811.60 is: 65,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,538.16 : 118,045.08 = 47,811.60 : x
  2. Step 2: Convert to fraction form
    85,538.16/118,045.08 = 47,811.60/x
  3. Step 3: Cross multiply
    85,538.16x = 118,045.08 × 47,811.60
  4. Step 4: Simplify right side
    85,538.16x = 5,643,924,146.93
  5. Step 5: Solve for x
    x = 5,643,924,146.93/85,538.16
  6. Step 6: Final answer
    x = 65,981.36

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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.