Home / 76,339.47-105,347.79-42,348.03

Finding the Fourth Proportional to 76,339.47, 105,347.79 and 42,348.03

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Solution

The fourth proportional to 76,339.47, 105,347.79 and 42,348.03 is: 58,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,339.47 : 105,347.79 = 42,348.03 : x
  2. Step 2: Convert to fraction form
    76,339.47/105,347.79 = 42,348.03/x
  3. Step 3: Cross multiply
    76,339.47x = 105,347.79 × 42,348.03
  4. Step 4: Simplify right side
    76,339.47x = 4,461,271,371.35
  5. Step 5: Solve for x
    x = 4,461,271,371.35/76,339.47
  6. Step 6: Final answer
    x = 58,439.90

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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.