Home / 65,460.19-90,332.70-40,009.15

Finding the Fourth Proportional to 65,460.19, 90,332.70 and 40,009.15

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Solution

The fourth proportional to 65,460.19, 90,332.70 and 40,009.15 is: 55,211.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,460.19 : 90,332.70 = 40,009.15 : x
  2. Step 2: Convert to fraction form
    65,460.19/90,332.70 = 40,009.15/x
  3. Step 3: Cross multiply
    65,460.19x = 90,332.70 × 40,009.15
  4. Step 4: Simplify right side
    65,460.19x = 3,614,134,544.21
  5. Step 5: Solve for x
    x = 3,614,134,544.21/65,460.19
  6. Step 6: Final answer
    x = 55,211.18

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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.