Home / 85,364.08-128,023.98-25,378.48

Finding the Fourth Proportional to 85,364.08, 128,023.98 and 25,378.48

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Solution

The fourth proportional to 85,364.08, 128,023.98 and 25,378.48 is: 38,061.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,364.08 : 128,023.98 = 25,378.48 : x
  2. Step 2: Convert to fraction form
    85,364.08/128,023.98 = 25,378.48/x
  3. Step 3: Cross multiply
    85,364.08x = 128,023.98 × 25,378.48
  4. Step 4: Simplify right side
    85,364.08x = 3,249,054,015.95
  5. Step 5: Solve for x
    x = 3,249,054,015.95/85,364.08
  6. Step 6: Final answer
    x = 38,061.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.