Home / 81,570.61-122,341.33-51,900.31

Finding the Fourth Proportional to 81,570.61, 122,341.33 and 51,900.31

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Solution

The fourth proportional to 81,570.61, 122,341.33 and 51,900.31 is: 77,841.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,570.61 : 122,341.33 = 51,900.31 : x
  2. Step 2: Convert to fraction form
    81,570.61/122,341.33 = 51,900.31/x
  3. Step 3: Cross multiply
    81,570.61x = 122,341.33 × 51,900.31
  4. Step 4: Simplify right side
    81,570.61x = 6,349,552,952.81
  5. Step 5: Solve for x
    x = 6,349,552,952.81/81,570.61
  6. Step 6: Final answer
    x = 77,841.19

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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.