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Finding the Fourth Proportional to 86,671.80, 130,007.70 and 53,283.60

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Solution

The fourth proportional to 86,671.80, 130,007.70 and 53,283.60 is: 79,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,671.80 : 130,007.70 = 53,283.60 : x
  2. Step 2: Convert to fraction form
    86,671.80/130,007.70 = 53,283.60/x
  3. Step 3: Cross multiply
    86,671.80x = 130,007.70 × 53,283.60
  4. Step 4: Simplify right side
    86,671.80x = 6,927,278,283.72
  5. Step 5: Solve for x
    x = 6,927,278,283.72/86,671.80
  6. Step 6: Final answer
    x = 79,925.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.