Home / 86,123.63-118,854.56-47,887.07

Finding the Fourth Proportional to 86,123.63, 118,854.56 and 47,887.07

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Solution

The fourth proportional to 86,123.63, 118,854.56 and 47,887.07 is: 66,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,123.63 : 118,854.56 = 47,887.07 : x
  2. Step 2: Convert to fraction form
    86,123.63/118,854.56 = 47,887.07/x
  3. Step 3: Cross multiply
    86,123.63x = 118,854.56 × 47,887.07
  4. Step 4: Simplify right side
    86,123.63x = 5,691,596,159.98
  5. Step 5: Solve for x
    x = 5,691,596,159.98/86,123.63
  6. Step 6: Final answer
    x = 66,086.35

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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.