Home / 85,501.52-118,025-76,533.20

Finding the Fourth Proportional to 85,501.52, 118,025 and 76,533.20

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Solution

The fourth proportional to 85,501.52, 118,025 and 76,533.20 is: 105,645.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.52 : 118,025 = 76,533.20 : x
  2. Step 2: Convert to fraction form
    85,501.52/118,025 = 76,533.20/x
  3. Step 3: Cross multiply
    85,501.52x = 118,025 × 76,533.20
  4. Step 4: Simplify right side
    85,501.52x = 9,032,830,930
  5. Step 5: Solve for x
    x = 9,032,830,930/85,501.52
  6. Step 6: Final answer
    x = 105,645.27

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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.