Home / 85,636.10-128,466.45-26,476.38

Finding the Fourth Proportional to 85,636.10, 128,466.45 and 26,476.38

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Solution

The fourth proportional to 85,636.10, 128,466.45 and 26,476.38 is: 39,718.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,636.10 : 128,466.45 = 26,476.38 : x
  2. Step 2: Convert to fraction form
    85,636.10/128,466.45 = 26,476.38/x
  3. Step 3: Cross multiply
    85,636.10x = 128,466.45 × 26,476.38
  4. Step 4: Simplify right side
    85,636.10x = 3,401,326,547.45
  5. Step 5: Solve for x
    x = 3,401,326,547.45/85,636.10
  6. Step 6: Final answer
    x = 39,718.37

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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.