Home / 85,614.16-118,145.80-47,888.72

Finding the Fourth Proportional to 85,614.16, 118,145.80 and 47,888.72

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Solution

The fourth proportional to 85,614.16, 118,145.80 and 47,888.72 is: 66,085.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,614.16 : 118,145.80 = 47,888.72 : x
  2. Step 2: Convert to fraction form
    85,614.16/118,145.80 = 47,888.72/x
  3. Step 3: Cross multiply
    85,614.16x = 118,145.80 × 47,888.72
  4. Step 4: Simplify right side
    85,614.16x = 5,657,851,135.38
  5. Step 5: Solve for x
    x = 5,657,851,135.38/85,614.16
  6. Step 6: Final answer
    x = 66,085.46

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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.