Home / 65,283.17-90,074.63-38,423.57

Finding the Fourth Proportional to 65,283.17, 90,074.63 and 38,423.57

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Solution

The fourth proportional to 65,283.17, 90,074.63 and 38,423.57 is: 53,015.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,283.17 : 90,074.63 = 38,423.57 : x
  2. Step 2: Convert to fraction form
    65,283.17/90,074.63 = 38,423.57/x
  3. Step 3: Cross multiply
    65,283.17x = 90,074.63 × 38,423.57
  4. Step 4: Simplify right side
    65,283.17x = 3,460,988,496.71
  5. Step 5: Solve for x
    x = 3,460,988,496.71/65,283.17
  6. Step 6: Final answer
    x = 53,015.02

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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.