Home / 86,638.04-119,616.71-77,547.63

Finding the Fourth Proportional to 86,638.04, 119,616.71 and 77,547.63

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Solution

The fourth proportional to 86,638.04, 119,616.71 and 77,547.63 is: 107,066.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,638.04 : 119,616.71 = 77,547.63 : x
  2. Step 2: Convert to fraction form
    86,638.04/119,616.71 = 77,547.63/x
  3. Step 3: Cross multiply
    86,638.04x = 119,616.71 × 77,547.63
  4. Step 4: Simplify right side
    86,638.04x = 9,275,991,981.16
  5. Step 5: Solve for x
    x = 9,275,991,981.16/86,638.04
  6. Step 6: Final answer
    x = 107,066.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.