Home / 85,824.63-128,736.95-70,012.62

Finding the Fourth Proportional to 85,824.63, 128,736.95 and 70,012.62

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Solution

The fourth proportional to 85,824.63, 128,736.95 and 70,012.62 is: 105,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824.63 : 128,736.95 = 70,012.62 : x
  2. Step 2: Convert to fraction form
    85,824.63/128,736.95 = 70,012.62/x
  3. Step 3: Cross multiply
    85,824.63x = 128,736.95 × 70,012.62
  4. Step 4: Simplify right side
    85,824.63x = 9,013,210,810.25
  5. Step 5: Solve for x
    x = 9,013,210,810.25/85,824.63
  6. Step 6: Final answer
    x = 105,018.93

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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.