Home / 85,856.08-128,802.36-26,690.32

Finding the Fourth Proportional to 85,856.08, 128,802.36 and 26,690.32

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Solution

The fourth proportional to 85,856.08, 128,802.36 and 26,690.32 is: 40,041.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,856.08 : 128,802.36 = 26,690.32 : x
  2. Step 2: Convert to fraction form
    85,856.08/128,802.36 = 26,690.32/x
  3. Step 3: Cross multiply
    85,856.08x = 128,802.36 × 26,690.32
  4. Step 4: Simplify right side
    85,856.08x = 3,437,776,205.16
  5. Step 5: Solve for x
    x = 3,437,776,205.16/85,856.08
  6. Step 6: Final answer
    x = 40,041.15

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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.