Home / 90,870.94-125,400.03-56,898.18

Finding the Fourth Proportional to 90,870.94, 125,400.03 and 56,898.18

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Solution

The fourth proportional to 90,870.94, 125,400.03 and 56,898.18 is: 78,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,870.94 : 125,400.03 = 56,898.18 : x
  2. Step 2: Convert to fraction form
    90,870.94/125,400.03 = 56,898.18/x
  3. Step 3: Cross multiply
    90,870.94x = 125,400.03 × 56,898.18
  4. Step 4: Simplify right side
    90,870.94x = 7,135,033,478.95
  5. Step 5: Solve for x
    x = 7,135,033,478.95/90,870.94
  6. Step 6: Final answer
    x = 78,518.32

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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.