Home / 42,746.81-64,117.78-11,579.63

Finding the Fourth Proportional to 42,746.81, 64,117.78 and 11,579.63

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Solution

The fourth proportional to 42,746.81, 64,117.78 and 11,579.63 is: 17,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,746.81 : 64,117.78 = 11,579.63 : x
  2. Step 2: Convert to fraction form
    42,746.81/64,117.78 = 11,579.63/x
  3. Step 3: Cross multiply
    42,746.81x = 64,117.78 × 11,579.63
  4. Step 4: Simplify right side
    42,746.81x = 742,459,819.28
  5. Step 5: Solve for x
    x = 742,459,819.28/42,746.81
  6. Step 6: Final answer
    x = 17,368.78

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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.