Home / 85,822.07-128,746.87-26,643.87

Finding the Fourth Proportional to 85,822.07, 128,746.87 and 26,643.87

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Solution

The fourth proportional to 85,822.07, 128,746.87 and 26,643.87 is: 39,970.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,822.07 : 128,746.87 = 26,643.87 : x
  2. Step 2: Convert to fraction form
    85,822.07/128,746.87 = 26,643.87/x
  3. Step 3: Cross multiply
    85,822.07x = 128,746.87 × 26,643.87
  4. Step 4: Simplify right side
    85,822.07x = 3,430,314,800.58
  5. Step 5: Solve for x
    x = 3,430,314,800.58/85,822.07
  6. Step 6: Final answer
    x = 39,970.08

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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.