Home / 85,438.04-128,084.08-60,399.32

Finding the Fourth Proportional to 85,438.04, 128,084.08 and 60,399.32

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Solution

The fourth proportional to 85,438.04, 128,084.08 and 60,399.32 is: 90,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,438.04 : 128,084.08 = 60,399.32 : x
  2. Step 2: Convert to fraction form
    85,438.04/128,084.08 = 60,399.32/x
  3. Step 3: Cross multiply
    85,438.04x = 128,084.08 × 60,399.32
  4. Step 4: Simplify right side
    85,438.04x = 7,736,191,334.83
  5. Step 5: Solve for x
    x = 7,736,191,334.83/85,438.04
  6. Step 6: Final answer
    x = 90,547.39

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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.