Home / 55,915.40-77,159.76-30,764.90

Finding the Fourth Proportional to 55,915.40, 77,159.76 and 30,764.90

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Solution

The fourth proportional to 55,915.40, 77,159.76 and 30,764.90 is: 42,453.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,915.40 : 77,159.76 = 30,764.90 : x
  2. Step 2: Convert to fraction form
    55,915.40/77,159.76 = 30,764.90/x
  3. Step 3: Cross multiply
    55,915.40x = 77,159.76 × 30,764.90
  4. Step 4: Simplify right side
    55,915.40x = 2,373,811,914.63
  5. Step 5: Solve for x
    x = 2,373,811,914.63/55,915.40
  6. Step 6: Final answer
    x = 42,453.64

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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.