Home / 77,139.94-106,442.47-43,146.67

Finding the Fourth Proportional to 77,139.94, 106,442.47 and 43,146.67

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Solution

The fourth proportional to 77,139.94, 106,442.47 and 43,146.67 is: 59,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,139.94 : 106,442.47 = 43,146.67 : x
  2. Step 2: Convert to fraction form
    77,139.94/106,442.47 = 43,146.67/x
  3. Step 3: Cross multiply
    77,139.94x = 106,442.47 × 43,146.67
  4. Step 4: Simplify right side
    77,139.94x = 4,592,638,127.07
  5. Step 5: Solve for x
    x = 4,592,638,127.07/77,139.94
  6. Step 6: Final answer
    x = 59,536.45

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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.