Home / 85,210.78-117,498.57-58,004.50

Finding the Fourth Proportional to 85,210.78, 117,498.57 and 58,004.50

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Solution

The fourth proportional to 85,210.78, 117,498.57 and 58,004.50 is: 79,983.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,210.78 : 117,498.57 = 58,004.50 : x
  2. Step 2: Convert to fraction form
    85,210.78/117,498.57 = 58,004.50/x
  3. Step 3: Cross multiply
    85,210.78x = 117,498.57 × 58,004.50
  4. Step 4: Simplify right side
    85,210.78x = 6,815,445,803.57
  5. Step 5: Solve for x
    x = 6,815,445,803.57/85,210.78
  6. Step 6: Final answer
    x = 79,983.38

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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.