Home / 42,303.20-58,347.36-30,378.78

Finding the Fourth Proportional to 42,303.20, 58,347.36 and 30,378.78

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Solution

The fourth proportional to 42,303.20, 58,347.36 and 30,378.78 is: 41,900.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,303.20 : 58,347.36 = 30,378.78 : x
  2. Step 2: Convert to fraction form
    42,303.20/58,347.36 = 30,378.78/x
  3. Step 3: Cross multiply
    42,303.20x = 58,347.36 × 30,378.78
  4. Step 4: Simplify right side
    42,303.20x = 1,772,521,613.02
  5. Step 5: Solve for x
    x = 1,772,521,613.02/42,303.20
  6. Step 6: Final answer
    x = 41,900.42

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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.