Home / 65,427.84-90,307.68-40,298.40

Finding the Fourth Proportional to 65,427.84, 90,307.68 and 40,298.40

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Solution

The fourth proportional to 65,427.84, 90,307.68 and 40,298.40 is: 55,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,427.84 : 90,307.68 = 40,298.40 : x
  2. Step 2: Convert to fraction form
    65,427.84/90,307.68 = 40,298.40/x
  3. Step 3: Cross multiply
    65,427.84x = 90,307.68 × 40,298.40
  4. Step 4: Simplify right side
    65,427.84x = 3,639,255,011.71
  5. Step 5: Solve for x
    x = 3,639,255,011.71/65,427.84
  6. Step 6: Final answer
    x = 55,622.42

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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.