Home / 86,140.05-129,210.27-26,980.89

Finding the Fourth Proportional to 86,140.05, 129,210.27 and 26,980.89

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Solution

The fourth proportional to 86,140.05, 129,210.27 and 26,980.89 is: 40,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,140.05 : 129,210.27 = 26,980.89 : x
  2. Step 2: Convert to fraction form
    86,140.05/129,210.27 = 26,980.89/x
  3. Step 3: Cross multiply
    86,140.05x = 129,210.27 × 26,980.89
  4. Step 4: Simplify right side
    86,140.05x = 3,486,208,081.74
  5. Step 5: Solve for x
    x = 3,486,208,081.74/86,140.05
  6. Step 6: Final answer
    x = 40,471.40

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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.